ABAP Select data from SAP table /IAM/S_SI_T001W into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /IAM/S_SI_T001W table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /IAM/S_SI_T001W. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /IAM/S_SI_T001W table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/IAM/S_SI_T001W TYPE STANDARD TABLE OF /IAM/S_SI_T001W,
      WA_/IAM/S_SI_T001W TYPE /IAM/S_SI_T001W,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </IAM/S_SI_T001W> TYPE /IAM/S_SI_T001W.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/IAM/S_SI_T001W.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /IAM/S_SI_T001W
  INTO TABLE IT_/IAM/S_SI_T001W.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /IAM/S_SI_T001W
*  INTO TABLE @DATA(IT_/IAM/S_SI_T001W2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/IAM/S_SI_T001W INDEX 1 INTO DATA(WA_/IAM/S_SI_T001W2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/IAM/S_SI_T001W ASSIGNING </IAM/S_SI_T001W>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</IAM/S_SI_T001W>-NAME2 = 1.
</IAM/S_SI_T001W>-STRAS = 1.
</IAM/S_SI_T001W>-PFACH = 1.
</IAM/S_SI_T001W>-PSTLZ = 1.
</IAM/S_SI_T001W>-ORT01 = 1.

ENDLOOP.

LOOP AT IT_/IAM/S_SI_T001W INTO WA_/IAM/S_SI_T001W.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/IAM/S_SI_T001W-EKORG, sy-vline,
  WA_/IAM/S_SI_T001W-VKORG, sy-vline,
  WA_/IAM/S_SI_T001W-CHAZV, sy-vline,
  WA_/IAM/S_SI_T001W-KKOWK, sy-vline,
  WA_/IAM/S_SI_T001W-KORDB, sy-vline,
  WA_/IAM/S_SI_T001W-BEDPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/IAM/S_SI_T001W you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/IAM/S_SI_T001W TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/IAM/S_SI_T001W INTO WA_/IAM/S_SI_T001W.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/IAM/S_SI_T001W-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IAM/S_SI_T001W-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/IAM/S_SI_T001W-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IAM/S_SI_T001W-SPRAS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/IAM/S_SI_T001W_STR, 
NAME2 TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
EKORG TYPE STRING,
VKORG TYPE STRING,
CHAZV TYPE STRING,
KKOWK TYPE STRING,
KORDB TYPE STRING,
BEDPL TYPE STRING,
LAND1 TYPE STRING,
REGIO TYPE STRING,
COUNC TYPE STRING,
CITYC TYPE STRING,
ADRNR TYPE STRING,
IWERK TYPE STRING,
TXJCD TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
SPRAS TYPE STRING,
WKSOP TYPE STRING,
AWSLS TYPE STRING,
CHAZV_OLD TYPE STRING,
VLFKZ TYPE STRING,
BZIRK TYPE STRING,
ZONE1 TYPE STRING,
TAXIW TYPE STRING,
BZQHL TYPE STRING,
LET01 TYPE STRING,
LET02 TYPE STRING,
LET03 TYPE STRING,
TXNAM_MA1 TYPE STRING,
TXNAM_MA2 TYPE STRING,
TXNAM_MA3 TYPE STRING,
BETOL TYPE STRING,
J_1BBRANCH TYPE STRING,
VTBFI TYPE STRING,
FPRFW TYPE STRING,
ACHVM TYPE STRING,
DVSART TYPE STRING,
NODETYPE TYPE STRING,
NSCHEMA TYPE STRING,
PKOSA TYPE STRING,
MISCH TYPE STRING,
MGVUPD TYPE STRING,
VSTEL TYPE STRING,
MGVLAUPD TYPE STRING,
MGVLAREVAL TYPE STRING,
SOURCING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/IAM/S_SI_T001W_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/IAM/S_SI_T001W_STR-NAME2 sy-vline 
WA_/IAM/S_SI_T001W_STR-STRAS sy-vline 
WA_/IAM/S_SI_T001W_STR-PFACH sy-vline 
WA_/IAM/S_SI_T001W_STR-PSTLZ sy-vline 
WA_/IAM/S_SI_T001W_STR-ORT01 sy-vline 
WA_/IAM/S_SI_T001W_STR-EKORG sy-vline 
WA_/IAM/S_SI_T001W_STR-VKORG sy-vline 
WA_/IAM/S_SI_T001W_STR-CHAZV sy-vline 
WA_/IAM/S_SI_T001W_STR-KKOWK sy-vline 
WA_/IAM/S_SI_T001W_STR-KORDB sy-vline 
WA_/IAM/S_SI_T001W_STR-BEDPL sy-vline 
WA_/IAM/S_SI_T001W_STR-LAND1 sy-vline 
WA_/IAM/S_SI_T001W_STR-REGIO sy-vline 
WA_/IAM/S_SI_T001W_STR-COUNC sy-vline 
WA_/IAM/S_SI_T001W_STR-CITYC sy-vline 
WA_/IAM/S_SI_T001W_STR-ADRNR sy-vline 
WA_/IAM/S_SI_T001W_STR-IWERK sy-vline 
WA_/IAM/S_SI_T001W_STR-TXJCD sy-vline 
WA_/IAM/S_SI_T001W_STR-VTWEG sy-vline 
WA_/IAM/S_SI_T001W_STR-SPART sy-vline 
WA_/IAM/S_SI_T001W_STR-SPRAS sy-vline 
WA_/IAM/S_SI_T001W_STR-WKSOP sy-vline 
WA_/IAM/S_SI_T001W_STR-AWSLS sy-vline 
WA_/IAM/S_SI_T001W_STR-CHAZV_OLD sy-vline 
WA_/IAM/S_SI_T001W_STR-VLFKZ sy-vline 
WA_/IAM/S_SI_T001W_STR-BZIRK sy-vline 
WA_/IAM/S_SI_T001W_STR-ZONE1 sy-vline 
WA_/IAM/S_SI_T001W_STR-TAXIW sy-vline 
WA_/IAM/S_SI_T001W_STR-BZQHL sy-vline 
WA_/IAM/S_SI_T001W_STR-LET01 sy-vline 
WA_/IAM/S_SI_T001W_STR-LET02 sy-vline 
WA_/IAM/S_SI_T001W_STR-LET03 sy-vline 
WA_/IAM/S_SI_T001W_STR-TXNAM_MA1 sy-vline 
WA_/IAM/S_SI_T001W_STR-TXNAM_MA2 sy-vline 
WA_/IAM/S_SI_T001W_STR-TXNAM_MA3 sy-vline 
WA_/IAM/S_SI_T001W_STR-BETOL sy-vline 
WA_/IAM/S_SI_T001W_STR-J_1BBRANCH sy-vline 
WA_/IAM/S_SI_T001W_STR-VTBFI sy-vline 
WA_/IAM/S_SI_T001W_STR-FPRFW sy-vline 
WA_/IAM/S_SI_T001W_STR-ACHVM sy-vline 
WA_/IAM/S_SI_T001W_STR-DVSART sy-vline 
WA_/IAM/S_SI_T001W_STR-NODETYPE sy-vline 
WA_/IAM/S_SI_T001W_STR-NSCHEMA sy-vline 
WA_/IAM/S_SI_T001W_STR-PKOSA sy-vline 
WA_/IAM/S_SI_T001W_STR-MISCH sy-vline 
WA_/IAM/S_SI_T001W_STR-MGVUPD sy-vline 
WA_/IAM/S_SI_T001W_STR-VSTEL sy-vline 
WA_/IAM/S_SI_T001W_STR-MGVLAUPD sy-vline 
WA_/IAM/S_SI_T001W_STR-MGVLAREVAL sy-vline 
WA_/IAM/S_SI_T001W_STR-SOURCING sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.